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Q311. A security administrator examines a network session to a compromised database server with a packet analyzer. Within the session there is a repeated series of the hex character 90 (x90).
Which of the following attack types has occurred?
A. Buffer overflow
B. Cross-site scripting
C. XML injection
D. SQL injection
Answer: A
Explanation: Explanation The hex character 90 (x90) means NOP or No Op or No Operation. In a buffer overflow attack, the buffer can be filled and overflowed with No Op commands. A buffer overflow occurs when a program or process tries to store more data in a buffer (temporary data storage area) than it was intended to hold. Since buffers are created to contain a finite amount of data, the extra information - which has to go somewhere - can overflow into adjacent buffers, corrupting or overwriting the valid data held in them. Although it may occur accidentally through programming error, buffer overflow is an increasingly common type of security attack on data integrity. In buffer overflow attacks, the extra data may contain codes designed to trigger specific actions, in effect sending new instructions to the attacked computer that could, for example, damage the user's files, change data, or disclose confidential information. Buffer overflow attacks are said to have arisen because the C programming language supplied the framework, and poor programming practices supplied the vulnerability.
Q312. A technician wants to securely collect network device configurations and statistics through a scheduled and automated process. Which of the following should be implemented if configuration integrity is most important and a credential compromise should not allow interactive logons?
A. SNMPv3
B. TFTP
C. SSH
D. TLS
Answer: A
Explanation:
Q313. Which of the following is a security benefit of providing additional HVAC capacity or increased tonnage in a datacenter?
A. Increased availability of network services due to higher throughput
B. Longer MTBF of hardware due to lower operating temperatures
C. Higher data integrity due to more efficient SSD cooling
D. Longer UPS run time due to increased airflow
Answer: B
Explanation:
The mean time between failures (MTBF) is the measure of the anticipated incidence of failure for a system or component. This measurement determines the component’s anticipated lifetime. If the MTBF of a cooling system is one year, you can anticipate that the system will last for a one-year period; this means that you should be prepared to replace or rebuild the system once a year. If the system lasts longer than the MTBF, your organization receives a bonus. MTBF is helpful in evaluating a system’s reliability and life expectancy. Thus longer MTBF due to lower operating temperatures is a definite advantage
Q314. Some customers have reported receiving an untrusted certificate warning when visiting the company’s website. The administrator ensures that the certificate is not expired and that customers have trusted the original issuer of the certificate. Which of the following could be causing the problem?
A. The intermediate CA certificates were not installed on the server.
B. The certificate is not the correct type for a virtual server.
C. The encryption key used in the certificate is too short.
D. The client’s browser is trying to negotiate SSL instead of TLS.
Answer: A
Explanation:
In a hierarchical trust model, also known as a tree, a root CA at the top provides all of the information. The intermediate CAs are next in the hierarchy, and they trust only information provided by the root CA. The root CA also trusts intermediate CAs that are in their level in the hierarchy and none that aren’t.
Q315. Which of the following risks could IT management be mitigating by removing an all-in-one device?
A. Continuity of operations
B. Input validation
C. Single point of failure
D. Single sign on
Answer: C
Explanation:
The major disadvantage of combining everything into one, although you do this to save costs, is to include a potential single point of failure and the reliance/dependence on a single vendor.
Renewal SY0-401 test engine:
Q316. RADIUS provides which of the following?
A. Authentication, Authorization, Availability
B. Authentication, Authorization, Auditing
C. Authentication, Accounting, Auditing
D. Authentication, Authorization, Accounting
Answer: D
Explanation:
The Remote Authentication Dial In User Service (RADIUS) networking protocol offers centralized Authentication, Authorization, and Accounting (AAA) management for users who make use of a network service. It is for this reason that A, B, and C: are incorrect.
References: http://en.wikipedia.org/wiki/RADIUS
Q317. A user in the company is in charge of various financial roles but needs to prepare for an upcoming audit. They use the same account to access each financial system. Which of the following security controls will MOST likely be implemented within the company?
A. Account lockout policy
B. Account password enforcement
C. Password complexity enabled
D. Separation of duties
Answer: D
Explanation:
Separation of duties means that users are granted only the permissions they need to do their work and no more. More so it means that there is differentiation between users, employees and duties per se which form part of best practices.
Q318. Which of the following can be utilized in order to provide temporary IT support during a disaster, where the organization sets aside funds for contingencies, but does not necessarily have a dedicated site to restore those services?
A. Hot site
B. Warm site
C. Cold site
D. Mobile site
Answer: D
Explanation:
Not having a dedicated site means that the mobile site can fill the role of either being a hot, warm or cold site as a disaster recovery measure.
Q319. After a production outage, which of the following documents contains detailed information on the order in which the system should be restored to service?
A. Succession planning
B. Disaster recovery plan
C. Information security plan
D. Business impact analysis
Answer: B
Explanation:
A disaster-recovery plan, or scheme, helps an organization respond effectively when a disaster occurs. Disasters may include system failure, network failure, infrastructure failure, and natural disaster. The primary emphasis of such a plan is reestablishing services and minimizing losses.
Q320. Which of the following has serious security implications for large organizations and can potentially allow an attacker to capture conversations?
A. Subnetting
B. NAT
C. Jabber
D. DMZ
Answer: C
Explanation:
Jabber is a new unified communications application and could possible expose you to attackers that want to capture conversations because Jabber provides a single interface across presence, instant messaging, voice, video messaging, desktop sharing and conferencing.
